holiday=['bj','sh','tj','gz','zj']
print(holiday)
print(sorted(holiday))
print(holiday)
print(sorted(holiday,reverse=True))
print(holiday)
#print(holiday.reverse())注意，不能这样用reverse（）方法！
#要这样用
holiday.reverse()
print(holiday)
holiday.reverse()
print(holiday)
holiday.sort()
print(holiday)
holiday.sort(reverse=True)
print(holiday)